[libpng16] Imported from libpng-1.6.1beta06.tar
diff --git a/LICENSE b/LICENSE
index af7484c..bd8f35b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.6.1beta06, March 2, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.1beta06, March 4, 2013, are
 Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 2, 2013
+March 4, 2013
diff --git a/README b/README
index 7bf03fb..4d95081 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.1beta06 - March 2, 2013 (shared library 16.0)
+README for libpng version 1.6.1beta06 - March 4, 2013 (shared library 16.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 898f095..9b5aa02 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.1beta06 - March 2, 2013
+ libpng version 1.6.1beta06 - March 4, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.1beta06 - March 2, 2013
+ libpng versions 0.97, January 1998, through 1.6.1beta06 - March 4, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -5161,7 +5161,7 @@
 
 XVI. Y2K Compliance in libpng
 
-March 2, 2013
+March 4, 2013
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index dadbb3d..6eb98d4 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "March 2, 2013"
+.TH LIBPNG 3 "March 4, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.1beta06
 .SH SYNOPSIS
@@ -504,7 +504,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.1beta06 - March 2, 2013
+ libpng version 1.6.1beta06 - March 4, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -515,7 +515,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.1beta06 - March 2, 2013
+ libpng versions 0.97, January 1998, through 1.6.1beta06 - March 4, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -5666,7 +5666,7 @@
 
 .SH XVI. Y2K Compliance in libpng
 
-March 2, 2013
+March 4, 2013
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5937,7 +5937,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.1beta06 - March 2, 2013:
+Libpng version 1.6.1beta06 - March 4, 2013:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5960,7 +5960,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.6.1beta06, March 2, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.1beta06, March 4, 2013, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -6059,7 +6059,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 2, 2013
+March 4, 2013
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 4a2a616..e2b2c46 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "March 2, 2013"
+.TH LIBPNGPF 3 "March 4, 2013"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.1beta06
 (private functions)
diff --git a/png.5 b/png.5
index cf5a14b..12df1ba 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "March 2, 2013"
+.TH PNG 5 "March 4, 2013"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/pngconf.h b/pngconf.h
index fdf4ca4..6c8ea55 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.6.1beta06 - March 2, 2013
+ * libpng version 1.6.1beta06 - March 4, 2013
  *
  * Copyright (c) 1998-2013 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrutil.c b/pngrutil.c
index 10e097d..c7f4abf 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -2817,9 +2817,13 @@
                {
 #                 ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
                      if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE)
+                     {
+                        png_chunk_warning(png_ptr, "Saving unknown chunk:");
                         png_app_warning(png_ptr,
                            "forcing save of an unhandled chunk;"
                            " please call png_set_keep_unknown_chunks");
+                           /* with keep = PNG_HANDLE_CHUNK_IF_SAFE */
+                     }
 #                 endif
                   keep = PNG_HANDLE_CHUNK_IF_SAFE;
                }
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index a2d5754..0160f93 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.6.1beta06 - March 2, 2013
+libpng version 1.6.1beta06 - March 4, 2013
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 8f08a8e..03bdef1 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.6.1beta06 - March 2, 2013
+ * libpng version 1.6.1beta06 - March 4, 2013
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 183c375..39ef13e 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.6.1beta06 - March 2, 2013
+Makefiles for  libpng version 1.6.1beta06 - March 4, 2013
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile